Selected Financial Information by Reportable Operating Segment (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Segment Reporting Information [Line Items]
Revenues		$ 714,723	$ 779,971
Adjusted EBITDA	[1]	152,254	193,430
Capital expenditures		57,569	80,163
U.S. Operating Segment
Segment Reporting Information [Line Items]
Revenues	[2]	554,816	596,343
International Operating Segment
Segment Reporting Information [Line Items]
Revenues		159,907	183,628
Operating Segments | U.S. Operating Segment
Segment Reporting Information [Line Items]
Revenues		557,798	599,645
Adjusted EBITDA		125,759	155,844
Capital expenditures		52,339	69,971
Operating Segments | International Operating Segment
Segment Reporting Information [Line Items]
Revenues		159,907	183,628
Adjusted EBITDA		26,495	37,586
Capital expenditures		5,230	10,192
Eliminations
Segment Reporting Information [Line Items]
Revenues		$ (2,982)	$ (3,302)

[1] Amounts for the three months ended March 31, 2019 were impacted by the adoption of ASC Topic 842 and the resulting change in the classification of certain of the Company’s leases

[2] U.S. segment revenues include eliminations of intercompany transactions with the international operating segment. See Note 16 for additional information on intercompany eliminations.